Zobrazeno 1 - 10
of 12
pro vyhledávání: '"R. L. Field"'
Autor:
J. H. Leclere, R. L. Field
Publikováno v:
The Journal of the Acoustical Society of America. 93:2599-2616
Ocean impulse response functions computed with the time‐domain parabolic equation model are shown to be consistent with response functions measured in a bottom‐limited ocean located off the east coast of the United States. The geoacoustics used i
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::642efa629c78b23f2f964a2378ed51d0
https://doi.org/10.1121/1.405834
https://doi.org/10.1121/1.405834
Publikováno v:
The Journal of the Acoustical Society of America. 92:210-218
The problem of estimating the arrival times of overlapping ocean‐acoustic signals from a noisy received waveform that consists of scaled and delayed replicas of a deterministic transient signal is considered. It is assumed that the transmitted sign
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bd54137ea38dee489c837ef7e2e0de82
https://doi.org/10.1121/1.404285
https://doi.org/10.1121/1.404285
Autor:
C. W. Walter, N. D. Gibson, R. L. Field, A. P. Snedden, J. Z. Shapiro, C. M. Janczak, D. Hanstorp
Publikováno v:
Physical Review A. 80
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1a737fdb266ff2557a796729a3b3a89c
https://doi.org/10.1103/physreva.80.014501
https://doi.org/10.1103/physreva.80.014501
Autor:
R. L. Field
Publikováno v:
Conference Proceedings on Engineering in the Ocean Environment.
The classification of transient signals is facilitated if propagational distortion is removed. This distortion can be removed if the ocean impulse response from source to receiver is known. The ocean impulse response is, however, very sensitive to so
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8271b6bb98a353e0504234400dee52be
https://doi.org/10.1109/oceans.1990.584735
https://doi.org/10.1109/oceans.1990.584735
Autor:
R. L. Field, M. K. Broadhead
Publikováno v:
Ocean Variability & Acoustic Propagation ISBN: 9789401054621
The effects of sound speed on the shape of the ocean impulse response measured within the shadow zone are investigated at a range of 12 km and depths of 489, 677, and 841 m. Measured impulse responses are computed by cross-correlating received signal
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::64b5fb49d98c5081fca54ceb6ce272de
https://doi.org/10.1007/978-94-011-3312-8_4
https://doi.org/10.1007/978-94-011-3312-8_4
Neutral networks have been showing great promise in several areas, one of which is the classification of underwater acoustic transients. The classification of low-frequency underwater acoustic transient signals using a neural network based system is
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e87c8e9bee8a347b16f44374a2f26c17
https://doi.org/10.21236/ada230739
https://doi.org/10.21236/ada230739
Autor:
J. H. Leclere, R. L. Field
Publikováno v:
The Journal of the Acoustical Society of America. 94:1868-1869
As signals propagate in the ocean their temporal and spectral features vary as a function of space and time. This is especially true in bottom‐limited environments where the signal may encounter numerous boundary interactions with significant loss
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::772389e1a8dab03ec4a104948f26339c
https://doi.org/10.1121/1.407622
https://doi.org/10.1121/1.407622
Autor:
R. L. Field
Publikováno v:
Review of Scientific Instruments. 38:1720-1722
The output power of the 6328 A helium‐neon gas laser has been investigated as a function of capillary diameter, total pressure, and He‐Ne partial pressure ratio at optimum dc discharge currents. The optimum value of pTd (total pressure × capilla
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9ab3dd89dfc5f204089ec8fade0ed700
https://doi.org/10.1063/1.1720653
https://doi.org/10.1063/1.1720653
Publikováno v:
Journal of Physics Communications; Oct2017, Vol. 1 Issue 3, p1-1, 1p
Autor:
Walter, C. W., Li, Y-G, Matyas, D. J., Alton, R. M., Lou, S. E., III, R. L. Field, Gibson, N. D., Hanstorp, D.
Publikováno v:
Journal of Physics: Conference Series; 2012, Vol. 388 Issue 2, p1-1, 1p